Offering a glimpse of its powerful inner mechanics, the Jazzmaster Open Heart lets precision take center stage with a new 42mm dial. Featuring a captivating midnight blue dial that sparkles, this showstopping timepiece fuses the modernity of urban architecture with the infinity of the cosmos. Showcasing Hamilton's ever-evolving craftsmanship and attention to detail, the dial brings the H-10 automatic movement into the spotlight. With its 80 hour power reserve and Nivachron™ balance spring, the Jazzmaster Open Heart Auto is fitted with an elegant blue leather strap.
Discover our collection of dress watches.
Offering a glimpse of its powerful inner mechanics, the Jazzmaster Open Heart lets precision take center stage with a new 42mm dial. Featuring a captivating midnight blue dial that sparkles, this showstopping timepiece fuses the modernity of urban architecture with the infinity of the cosmos. Showcasing Hamilton's ever-evolving craftsmanship and attention to detail, the dial brings the H-10 automatic movement into the spotlight. With its 80 hour power reserve and Nivachron™ balance spring, the Jazzmaster Open Heart Auto is fitted with an elegant blue leather strap.
Discover our collection of dress watches.
How to Care for Your WatchRead the manual: Each watch has specific care instructions — follow them to avoid damage.Keep it clean: Wipe with a soft cloth; use a soft toothbrush with water only. Avoid chemicals.Store properly: Keep your watch in a cool, dry place. Use a watch box or roll. Avoid heat and sunlight.Service regularly: Follow brand recommendations for maintenance to keep accuracy and performance.Wind it: Wear or wind mechanical/automatic watches regularly; use a watch winder if needed.Be gentle: Avoid shocks, drops, and rough activities — remove your watch when active.Professional cleaning: A polish can restore shine and remove scratches.Know water resistance:• 30m: Splashes only• 50m: Showering/light swimming• 100m: Swimming/snorkeling• 200m: Recreational scuba• 500m+: Professional divingDon’t press buttons underwater unless the watch is built for it.
How to Care for Your WatchRead the manual: Each watch has specific care instructions — follow them to avoid damage.Keep it clean: Wipe with a soft cloth; use a soft toothbrush with water only. Avoid chemicals.Store properly: Keep your watch in a cool, dry place. Use a watch box or roll. Avoid heat and sunlight.Service regularly: Follow brand recommendations for maintenance to keep accuracy and performance.Wind it: Wear or wind mechanical/automatic watches regularly; use a watch winder if needed.Be gentle: Avoid shocks, drops, and rough activities — remove your watch when active.Professional cleaning: A polish can restore shine and remove scratches.Know water resistance:• 30m: Splashes only• 50m: Showering/light swimming• 100m: Swimming/snorkeling• 200m: Recreational scuba• 500m+: Professional divingDon’t press buttons underwater unless the watch is built for it.
Express Shipping: Orders placed by 2 PM ship within 48 hours (subject to availability).Standard Shipping: Free on orders over $75. All orders require 48 hours processing and deliver in 2–7 days.Local Pickup: Available Tuesday–Friday, 10 AM–2 PM. You’ll receive an email when your order is ready. Please call or email to arrange pickup.Please note:– All packages require a signature.– We do not ship to P.O. boxes.ReturnsIf you’re not fully satisfied, returns are accepted within 14 days of delivery in original condition. All returns require approval and a Return Authorization number. A restocking fee may apply.For any questions or updates, email info@gembijou.com.
Express Shipping: Orders placed by 2 PM ship within 48 hours (subject to availability).Standard Shipping: Free on orders over $75. All orders require 48 hours processing and deliver in 2–7 days.Local Pickup: Available Tuesday–Friday, 10 AM–2 PM. You’ll receive an email when your order is ready. Please call or email to arrange pickup.Please note:– All packages require a signature.– We do not ship to P.O. boxes.ReturnsIf you’re not fully satisfied, returns are accepted within 14 days of delivery in original condition. All returns require approval and a Return Authorization number. A restocking fee may apply.For any questions or updates, email info@gembijou.com.
